Table 82 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 82. Conch ontogeny of Zadelsdorfia zana sp. nov. from Mfis (Anti-Atlas)
dmconch shapewhorl cross section shapewhorl expansion3 mmdiscoidal; very evolutestrongly depressed; moderately embracingvery low(ww/dm ~0.45; uw/dm ~0.60)(ww/wh ~2.20; IZR ~0.20)(WER ~1.45)8 mmthickly discoidal; evolutemoderately depressed; strongly embracinglow(ww/dm ~0.55; uw/dm ~0.50)(ww/wh ~1.90; IZR = 0.35)(WER ~1.55)15 mmthinly pachyconic; subevoluteweakly depressed; moderately embracinglow(ww/dm ~0.65; uw/dm ~0.35)(ww/wh ~1.45; IZR ~0.25)(WER ~1.65)